Developer Tools

RSC Boundary

Last updated 2026-07-27 · benchmark measured 2026-08-09 — deterministic & reproducible

A dev tool that visually highlights server and client component boundaries in React apps.

Is RSC Boundary production-ready?

Legit.Show scores RSC Boundary 70 out of 100 — the simple average of its 7 measured frames. Legit.Show ran its deterministic 7-Frame production-readiness benchmark on RSC Boundary (public-surface assessment), measured from the public surface with no LLM in the scoring path. Its strongest frame is Reliability; its weakest is Privacy. Every frame it averages is published with its evidence on the Legit.Show listing.

The 7 Frames

• Performance — 99/100
• Accessibility — 96/100
• Security — 45/100
• Privacy — 25/100
• Reliability — 100/100
• Standards — 92/100
• Discoverability — 35/100

What we measured

• Security headers present: HSTS.
• No Content-Security-Policy.
• Served over HTTPS with a valid certificate.
• Real Lighthouse performance run — 416 ms to first byte.
• Returns a proper 404 for unknown routes.
• 3 of 3 sampled routes reachable.
• No privacy policy found.
• Sets cookies / loads scripts with no consent prompt.

Who it's for

Next.js developers · React developers · TanStack Start users · Full-stack engineers

Visit RSC Boundary → · Alternatives to RSC Boundary → · How this was measured →